Omeprazole regulate gastric cancer microenvironment by regulate exosomes associated miRNA
ABSTRACT: Exosomal miRNAs have emerged as microcommunicators of pathologic conditions including cancer where they educate the tumor microenvironment in favor of metastasis. We purified exosomes from the medium of SCG-7901 cells which was treated by 80ug/ml omeprazole 24h and was analysed by Aglient human microarray. Overall design: SGC-7901 cells was treated with omeprazole at 80ug/ml for 24h, and PBS was used as control. And the medium of SGC-7901 cells were collected and the exosomes were isolated by ExoQuick-TC exosome precipitation solution. Then the miRNA involved in exosomes was isolated by the total RNA purification Kit.Next the miRNA was analysised by microarry.
INSTRUMENT(S): Agilent-046064 Unrestricted_Human_miRNA_V19.0_Microarray (Probe Name version)
Project description:To further analyze the change of differential gene expression between SGC-7901 cells treated with 100ng/ml periplocin and untreated cells, respectively. We employed whole genome microarray expression profiling as a discovery platform to identify genes. Gene expression in SGC-7901 cells treated with 100ng/ml periplocin for 24h at 37 ºC in a humidified incubator with 5% CO2.
Project description:Expression analysis of gene expression changes in Homo sapiens SGC-7901 cells after knock down of MTA2 (Metastasis-associated protein) or overexpression SNHG5 (snoRNA host gene 5) Investigation of whole genome gene expression level changes in a Homo sapiens gastric carcinoma cells SGC-7901 after knock down MTA2 expression and upregulation of SNHG5 A four chip study using total RNA extracted from SGC-7901 cells transfected with siRNA negative control and SGC-7901 cells knock down of MTA2 with siRNA. Each chip measures the expression level of 45033 genes collected from the authoritative data source including NCBI
Project description:An RNA transcriptome sequencing analysis was performed in SGC-7901 cells that were transfected with tcons_00001221 shRNA or control shRNA. Overall design: mRNA profiles of SGC-7901 cells transfected with tcons_00001221 shRNA or control shRNA.
Project description:Cisplatin is the first-line agent utilized for the clinical treatment of a wide variety of solid tumors including gastric cancer. However, the intrinsic or acquired cisplatin resistance is often occurred in patients with gastric cancer and resulted in failure of cisplatin therapy. In order to investigate if miRNA involves in cisplatin resistance of human gastric cancer, we first screened and compared the expression of miRNAs between cisplatin resistant gastric cancer cell lines SGC-7901/DDP and BGC-823/DDP and their sensitive parental cells by miRNAs microarray. Overall design: Total miRNAs expression was examined in SGC-7901,SGC7901/DDP,BGC-823,BGC-823/DDP four cell lines.
Project description:Metastasis associated 1 family, member 2 (MTA2) gene is classified to metastasis associated gene family. We have previously reported that MTA2 gene was overexpressed in gastric cancer tissues, correlating with tumor invasion, lymph node metastasis, and advanced TNM stage. MTA2 knockdown significantly inhibited gastric cancer cell invasion and metastasis. Yet, its molecular mechanisms are still unclear. The aim of this study is to investigate the molecular mechanisms of MTA2 in regulating malignant behaviors of gastric cancer. This experiment captures the expression data between BGC-823/NC and BGC-823/MTA2, SGC-7901/NC and SGC-7901/shMTA2 cells using Whole human genome microarray 4×44K (Design ID: 014850, Agilent technologies).
Project description:HPSE plays important roles in gastric cancer cell proliferation, apoptosis and metastasis.The aim of this study is to explore molecular mechanism underling roles of HPSE in gastric cancer cell proliferation, survival, migration and metastasis. SGC-7901 gastric cancer cells were transfected with HPSE siRNA (10nM) or scramble control siRNA, RNA were extracted 24hours after transfectioin and hybridized to Affymetrix microarrays. 3 biological repeats were used for each condition.
Project description:To explore the functon of IRX1 in gastric cancer, we employed whole genome microarray expression profiling as a discovery platform to identify gene expression changes in three samples. We constructed the eukaryotic expression vector pEGFP-IRX1. The pEGFP-IRX1 expression vector was transfected into SGC-7901 gastric cancer cells by Lipofectamine 2000. The IRX1 protein was mainly observed in nuclei. Naive SGC7901 and empty vector pEGFP-N1 transfected cells were used as controls. Gene expression profiles were compared between parental gastric cancer cell line SGC7901 and cells transfected with pEGFP-IRX1 and pEGFP-N1.
Project description:Piper longum L. is a well-known traditional antihyperlipidemic medicine，and it has ability to inhibit proliferation of cancer cells，potassium piperate (GBK) maybe have the same effect. We used microarrays to detail the global programme of gene expression underlying cellularisation and identified distinct classes of up-regulated and down-regulated genes during this process. Overall design: treat and untreat with GBK on MCF-7 and SGC-7901 for RNA extraction and hybridization on Affymetrix microarrays. And then analysis the result to compare the express level between two cells that treat or untreat with GBK.
Project description:To explore the functon of IRX1 in gastric cancer, we employed whole genome microarray expression profiling as a discovery platform to identify gene expression changes in three samples. We constructed the eukaryotic expression vector pEGFP-IRX1. The pEGFP-IRX1 expression vector was transfected into SGC-7901 gastric cancer cells by Lipofectamine 2000. The IRX1 protein was mainly observed in nuclei. Naive SGC7901 and empty vector pEGFP-N1 transfected cells were used as controls. Overall design: Gene expression profiles were compared between parental gastric cancer cell line SGC7901 and cells transfected with pEGFP-IRX1 and pEGFP-N1.